Cushioned vitreous stopper



ec, M 1923.

V. S. JOHNSON CUSHIONEDVITREOUS STOPPER Filed Jan. 2'7. 1922 VICTOR s. JOHNSON INVENTOR.

A TTORNE Y.

Patented Dec. 11,

UTED STATES 1,476,820 I PATENT OFFICE.

vrcron s. .ionnson, or cnrcaco, rumors, assronoa r THE mun LAMP commm or AMERICA, or CHICAGO, rumors, a coaroa 'rron or rumors.

CUSEIONED VITBEOUS STOPPER.

Application filed January, 27, 1922. Serial No. 532,306.

T 0 all whom it may concern:

Be it known that I, Vrcron S. JoHNsoN, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Cushioned Vitreous Stoppers, of which the following is a specification.

The invention relates to frangible stoppers of the heat-insulated type, and of the kind that are to be used with heat-insulated containers. f

The stoppers in which my invention is embodied, are made of glass or other vitreous material which is used, not only because of its cleanliness, but on account of its good heat-insulating properties. Glass, however, is very brittle and is liable to be broken by jars occurring during transportation and use, and I have, there ore,,devisedmeans, as herein set forth, for insulating these frangible stoppers from shocks, the stop-.

pers being mounted on a body of cushioning material, such as rubber, and surmounted by another body of cushioning material which may also be rubber, and preferably carried by the stoppers. The stoppers are held in closed position by retaining means which,

as herein set forth, is a drinking cup secured,

as by screw threads, to the outer jacket with which the container is provided.

The stoppers of heat-insulated containers,

as heretofore constructed, were held in closed position by caps or drinking cups having direct contact with the stoppers, but these devices were not satisfactory because the thrust of thecaps against the stoppers was liable to break them, and in time reacted upon the caps and caused their deformation so that they would no longer hold the stoppers a inst their seats. The cushioning means with which the herein-described stop rs are provided affords a remedy for this culty, since they may yield sufliciently to 46 relieve the retainin ca of the strain which, if exerted in 11 orce, would cause deformation of their disc-like tops.

The invention will be best understood if reference is made to the accompanying which the shows In vertical section the upper portion of a heatinsulated container embodying my invention.

1 is the protective jacket of the device and 2 is the container which is made of II glass or other suitable substance, such as metal coated with a suitable enamel. The jacket has an inturned flange 3 at its upper end resting on the top edge .of the container, and between thev jacket and the container there is disposed a mass of. comminuted material 4 which assists in the heat insulation of the container.

The outer jacket 1 has screw threads 5, and is further heat insulated from the containerby a bond 6 made of heat-treated and chemically altered lac, or other suitable bonding substance.

Thestopper 7 is'made of glass or similar material, and it contains rarefied air, or is entirely exhausted of air, to afford heatinsulation at the top of the container. This stopper rests on a gasket 8 of rubber, or the 'like, which makes a tight closure and also cushions the stopper from below. The stopper is provided with an upwardly-extending flange 9 to which is sealed a cap 10 having a down-turned flange 11,-enc-ircling the flange 9 and concealin the sealing material 12. The cap is provi ed with a cavity 13 in which is tightly held a cushion 14 of rubber or other suitable cushioning material. 15 is a drinking cup provided with screw threads 16 for engagin the screw threads 5, of the jacket 1, an having a flexible, dished top 17 bearing upon the cushion 14 of the cap 10, the proportions of the parts being such that when the cup 15 is screwed home the compression of the cushion 14 will be insuflicient to react upon the disc-like top of the said cup with force enough to distort'it.

The cushion. 14 has, as will be observed, a single oint of contact with the cup 15, while t e gasket 8 which underlies the stopper, has a circumferential contact with said stopper. The advantage derived from this disposition of said elements is uallation of the pressure upon all parts of t e gasket, and the co uent avoidance of leakage at any point 0 contact. 100

Having thus described my invention, what I claim is: I

1. A hollow frangible stopper provided with a centrally-' cushioning element to its top.

2. ho ow frangi 1e stopper havmg' a centrally-dis recess in its top for a cushionmg ent.

3. 'A hollow frangible stopper having an in its top, and a cap for closing! opemng secured to said stopper and on which it may.

rest.

6. A' frangible stop or having a. superimposed cushioning eement presenting a single-point contact at its top, and a circular cushioning element on which it may rest.

7. The combination with a container of a frangible stopper closing said container, a

retainin cap for said stopper secured in adjustab e position on said container, and two cushioning elements between which said stopper is sustained, one of said cushioning elements bein carried at the to and the other surrounding the body of said stopper. 8. The combination with a container of a frangible stopper closing said container, a retaining cap forsaid stopper secured on said container by screw threads, and two cushioning elements between which said stopper is sustained, one of said cushioning elements being carried at the to and the other surrounding the body of-said stopper.

9. The combination with a container of a jacket surrounding said. container and provided with screw threads at its top, a frangible stopper closing said container, a retaining ca for said stopper engagingsaid screw threa s and a cushioning element disposed between said sto per and said cap, said cushioning element ing a part of said stopper.

10. The combination with a container of frangible hollow stopper closing said con tainer, a cushioning element surmounting said sto per, and a cap having a resilient portion aring on said cushioning element.

11. The combination with a container of a frangible stopper closing said container, resilient retaining means for said stopper, and cushioning elements disposed above and below said stopper, the u per cushioning element being a part of an the lower cushioning element surrounding said stopper.

12. A hollow frangible sto per having an opening at its top and a shou der in its body portion, a groove below said shoulder for olding a resilient gasket, and a cap closing the opening at its top, said cap having a depression and a resilient member secured within said depression.

. 13-. A stopper for use with a container having a retaining ca adapted to be adjustably secured to suit container, said stopper being provided at its top with a cavity containing a cushioning element adapted to be engaged by the retaining cap for holding the sto per in position on said container.

14. he combination with a. heat-insulated container, of a hollow frangible stopper closing said container, retaining means for said stopper, and two resilient and nonmetallic cushioning elements between which said sto per is'sustained, one of said cushioning e ements being carried hi; the stop per and cooperatingv with and cing compressed by said retaining means, and the other cushioning elenient being a gasket surrounding and carried by said stopper.

In testimony whereof I affix my signa ture in the presence of two witnesses.

' VICTOR S. JOHNSON.

Witnesses:

C. W. DAVIS, A. H. GLANTZ. 

